Surgical snare



July 17, 1923.

.E. C. DAY

SURGICAL SNARE Filed Dec. 24 1919 s Sheets-Shet 1 INVENTOR ATTORNY Mai/M 0 E. C. DAY

SURGICAL SNARE July 17, 1923.

3 Sheets-Sheet 2 Filed Dec. 24, 1919 ATTORNEY J ly. 17', 1923,

. E. C. DAY

SURGICAL SNARE s Shets-Sheet s Fileci Dec 01023 INVENTOFQ wrrNEssEs ATTORNEY- Patented July 17, 1923.

iUlTED STATES EMORY CLAPI DAY, OF LAGUNA BEACH, CALIFORNIA.

SURGICAL SNARE.

*\ Application filed December 24, 1919'. Serial No. 347,156.

I 9 allwhom it may concern:

Be it known that I, EMORY C. DAY, a citizen of the United States, residing at Laguna Beach, in the county of Orange and State of California, have invented a new and useful Surgical Snare, of which the following is a specification. l

This invention has reference to. surgical snares, and its object is to remove tissue masses, either natural, such as normal tonsil, or pathological, such as enlarged or diseased tonsils, neoplasms or other tumors. The in vention is of especial value for the removal of enlarged tonsils, and, without limiting the use of the invention to such particular purpose, the following description will be directed, in considering the =operation of the invention, as applied to the removal of en-. larged or diseased tonsils.

In accordance with the invention the usual snare is employed, such snare being custom? arily made of a strand loopedupon itself and passed through aguide. Carrying the guide there is provided a handle, which may be a pistol grip, handle so made as to give a firm hold to the instrument, and carried by the handle is a slidable or reciprocablemember to which thesnare is secured. In order to actuate the snare there is also provided a levermechanism directly or indirectly connected to the slidable member, which latter is connected to the snare. The lever ac tuating mechanism for the snare operates on the principle of a lever ofthethird order, such arrangement permitting the holding of the body or handle of the instrument firmly in one positionagainstthe wristend of the palm of the hand steadily whilethefingers may then with onetsqueezeorpull accomplish the full actuation of themoving parts. The invention will be best understood from a consideration ofthe following de tailed description taken in connection with the accompanying drawings forming part of this specification, with the understanding, however, that the invention is not confined to any strict conformity with the showing of the drawings, but may be changed and modified so long as such changes and modifica tions mark no material departure from the salient features of theinvention asexpressed in the appended claims.

In the drawings,

Figure l is aside elevation of an instrument embodying the invention.

Figure 2 is a plan View thereof. l

, Figure 3 is. a section on the line 3-3 of Figure 1. e L

Figure 4: is a section on the line 4.- -4.- of Figure 1.

Figure 5 is a side elevation of an instrument similar to Figure 1 but difiering therefrom in some particulars.

Figure dis a side elevation of a simple form of instrument to illustrate the principle of operation thereof. t

Figure 7 is a side elevation, :with some parts broken away, of still anotherembodiment of the invention.

Figure 8 is a plan view of the structure of Figure 7.

Figure 9is a. sectionon the line .99 of Figure 7. Y I i Referring to the drawings and particularly to Figure 1,,there is shown a frame 1, whichmay be an outline frame similar in. shape to a pistol grip. This frame, as shown in Figure 1, comprises a handhold 2, a top member 3, a bottom member 4 and a forward brace 5 connecting the forward end of the top, member with the forward end of. the bottom member. Such frameis therefore aclosed frame with the top member somewhat longer than the bottom member, and by closing the frame the body por tion of the snare is strengthened.

At the forward and rear ends of the top members are upstanding lugs 6 and 7 respec: tively, andextending between and connecting the lugs is a bar 8 constituting a guide bar longitudinal of the bottom member. The lug6 rises higher than the lug 7 and. corn nected to and projecting forwardly from the lug 6 is a tubular guide 9 of such length as may be necessary. I

The guide bar 8 has mounted thereon an elongated sleeve or slide 10 slidablefalong the bar'without. turning. The members 4: and 5 meet at an angle and are there formed into a rib 11 to which is pivoted one end of a lever 12,.the otherend 13 of which engages the block lOtas by a strap 14, so that as the. lever is rocked about its pivot connebtion with the rib 11, the block 10 is amaz w m f f thepagsageofaconnecting bolt 9 1' A mo ved' hack and forth in accerdance With 3 a rear .bar 2, and a, bottom bar 4:, thu 65 the direction bf nrtovement of the 1ever.- producing-in effect a pistol-grip handheld."

The SIBGVB' 10 Ca ri a binding p081; 1 5,120 The top bar is elongated away from therear V v Which'is connected-one endxof a snare strand bar andhas lugs 6 7 at opposite ends, with J g -5fl6 carriedlthrdugh the lug6 a ndfguide 9'tb th lug havin thicken'ed @pjoit-ion 6 t the I forward end'ef thelattetlwhere-the "with'a passage 6therethrough'aliningwith I share is formed intoa 100p 17 t0encirc1e'the,=asimilar passage through the lug 7 7 I vtissue 'it .is deslred -i-tq: emo e, Near the/ i Mou tedto slide i n thepassages through the junction of the b 'S 2 3 m 1s" pr lugs6 7 a is a bar 27*, through which, at an 10 Vi IeIib 0r Wg v'18, Whi h islpivote appropriate point, is a; slot 27?, whilethe O Of a finger grip. 19 of a lever 20 barB? has 2L longer slot 29 extending length- I ,provided witha 'web QI d 'i rectG'd'teWard-ahdf wi'se o f the bzirwgaid so rranged asto nt r ng etw en 'Other webs 22fextending have, the \slot 27" registeringwithit as the t mf h 67 2 t W 1 grip 1 1' T bar 27 is reciproeat'e'd'f Extending fromthe "cw/@1591 is' ofdvidll vviiilil".an elongatecl 1 1ilg"G :iSj at tubular g1iide ;9 *si mi l a/r"to th romna metummy curved It and." The 1111161. 6nd

j 2 amytmugh hitnecessarily{furnished with m1 jrgg abl gbm gq a h 7 1WW50WWWW/WW" WNW/t1 Matt/702mm;

WWWWw ttwwq W WWWtf qrpepw 5 9 mm:

otthfisnare 101mm t by a binding screw 15. The sleeve 10? is rovlded, within the interior of thetop memer 3", with spaced fingers 10 between which "a roller 12 carried by the-upperend of the in which there is formed a curved slot 23" traversed by a bolt or screw 25 carried 'by thev lever 12 intermediateof its length.

The structure otFigure Tand associated figures has a similarity in action to that of Figure l and associated figures,=except as to some matters of detail which'are found to be advantageous both from a: manufacturing standpoint and in actual use.

' Each structure includes a handheld or frame, a slidable member guided tomove in a straight line, a snare wire extending through a guiding tool and formed at one end into aloop whilethe otherend is made fast to the slidable member, and a lever of the third order associated with and carried by the handhold and'connected to the slidable member in such a way as topropel the latter to move the snare lengthwise of the snare guide. 1J5

The lever'of the third order may be used alone'to actuate the snare wire or may be used in conjunction with another lever, the two levers being then connected to constitute a compound lever with that one of the levers connected to the snare wire, in the form of a lever of the third order;

lVhat is claimedis:"

1. A surgical snare comprisinga-su'itable body portion with a. handhold, a snare wire guide-on the body portion, and a 'levero'fthe third order carried by the body portion and connected to the snare wire, said lever and handhold being coact'ively related to be gripped by one hand of the user, with the gripping force applied in a direction away from the snare wire.- 1

2. A surgical snare comprising a suitable body portion, reciprocable means on the body portion for carrying and actuating a snare wire, and a lever oft-he third order for operating thesnare wire actuating means and located within reach of the hand of an operator holding the body portion, witlr the operating forces applied in adirectionaway from the snare-wire.

3. A surgical snare comprising-asuitable body portion with a handhold,-a'snarewire guide on the body portion. and a lever of the third order carried by the :body portion and connected to the snare"wire,--said lever h ing a fingerhold intermediate of its portion in the form of a closed frame, a-

lever of the third order mounted in the frame with a finger grip for actuating the lever and supporting the instrument by one hand ofthe user,-.a slidable member connected to the leverufor actuation thereby, a snare guide, anda snare extending through the guide andfast totheslidable member.

5. A surgical snare comprising a handle, a snare guide projecting therefrom, a snare traversing the snare guide, a slidable member mounted on the handle and-connected to the snare, a leverof the third order connected to the slidable member for actuatlng the latter, and gripping meansassociated with the lever for grasping the gripping I means and leverby one hand to actuate the lever. 1 i i 6. A. surgical snare having a body portion, a slidable member mounted on the body port-iomfa snare wire connected to the r -3 slidable member, a lever of the third order on-the body portion'and connected to the slidable member for actuating the latter, and gripping means associated with the lever to be both grasped by actuate the leverlv 7. A 'surgical snare comprising a body portion in the form of a frame with top, bottom," front andrear bars with the rear one hand to bar shaped to be. grasped by the human hand, spaced lugs rising fro n the top bar,

a guide bar extending between: the lugs, a

"slidable guide mounted on the guide bar, a

snare guide projecting from one oif'the lugs,

a snare extending through the snare guide "andse'cured to the slidable guide, a lever of the thirdorder pivoted to the frame and engagingthe guide, and another lever carried bythe frame and connected to thefirstnamed leven wherehy thevtwo levers constitute a compound lever.

8; A surgical snare comprising a body portion. in the form of a frame with top, bottom and. rear/bars, withthe latter shaped to be grasped by the human hand, a guide bar carried by the top bar of the frame a slidable guide. or sleeve mounted on the guide-ybar, a snare guide projecting forwardly from the top bar, a snare strand extending through the snare guideand secured to the sleevei', a' lever of the third order pivoted to the frame and engaging the sleeve, and another lever carried by the frame' a nd acting upon the first-named lever through a slidable connection: whereby the two levers constitute a compound lever. i

,9. A surgical snare comprising a bodv portion with marginal-bars one of which constitutes a gripping member, a guide bar on the body portion, a slide thereon, a binding post carried by the slide, a snare guide extending forwardly from thebody portion,

a snare strand extending through the snare guideand connected to thebinding post, a;

portion in the form of a frame, a slide mountedon the frame for movement to and fro therealong, a snare guide extending forwardly from the} frame, a snare strand extending through the snare guide and connected to the slide. a lever of the third order mounted in the forward part of the frame and connected to the slide, another lever mounted in the rearpart ofthe frame and adapted to be engaged by the fingers of the human hand in turn engaging the frame, the second-named lever having a slot therein traversed by a connecting member engaging the first-named lever intermediate of its length and said levers together constituting a compound lever.

11. A surgical snare comprising a body portion in the form of an open frame com-' posed of top, rear andbottom members with the rear member constituting a hand grip, a snare guide extending from the forward end of-the top member, a guide bar on the top 'member, a slide on the guide bar, a binding post carried by the slide, a snare strand extending through the snare guide and con nected to the binding post, a lever of the third order pivoted at one end toptheforward end of the bottom member and at the other end engaging the slide, and another lever pivoted to the top member and connected to the first-named lever, said secondnamed lever being shaped-to be engaged by the fingers of the handgra-sping the rear member.

12. A surgical'instr'ument having a body comprising a handhold, a top member and a bottom'member, with the, top and bottom members extending forwardly from the handhold at the upper and lower ends. a slide mounted on the body, a compound lever comprising an upstanding lever pivoted at the lower end to the'bottoni member and connected at its upper endfto the slide, a manipulating lever pivoted at its upper end to the body and depending downwardly in the Space between the first-named lever and the handhold, and a pin and slotted connection between the two levers at a point between their two pivots;

13. A surgical instrument comprising a body with a handhold at the rear' simulating a pistol grip, a guide for a surgical device on and projecting'forwardly from the'body, a slide for connection to the surgical device,'and a compound leverfor actuating the slide, said compound lever. having one member pivoted at the lower end and connected vice on and projecting forwardly from the body, a slide for connection to the surgical device, and a compound lever for actuating the slide, said compound lever having'one member pivoted at the lower end and connected to the slide, and the other member pivoted at the upper end andsli'dably con-' neeted to the first-named member between the two pivots of said members, said slidable connection consisting of a pin on onemember engaging a curved slot of the other member.

15. A surgical instrument comprising a body portion with ahanIdhold at the rear end simulating a pistol grip, a guide for a surgical device on and pro ecting forwardly from the body portion, a slide for connection to the surgical device, a compound lever having one member thereof constituting a lever of the third order and acting directly on the slide, and another lever between the'first named lever and the hand I? hold and slidably connected to the firstnamed lever and-adapted to be grasped by the fingers of the hand with the handhold lodged in the palm of said hand.

16. A surgical instrument comprising a body portion with a handhold' at the rear end simulating a pistol grip, a guide for a surgical deviceon and proj'ectingforwardly from the body portion, a slide for connection to the surgical'device, a compound, lever having one member thereof constituting a lever of the third order and acting directly on the slide, and another lever between theiirst-named lever and the handhold and slidably connected to said first-named lever and adapted tobe grasped by the fingers of the hand, with the handhold lodged in the palm of said hand, the first-named lever member of thecompound lever having its pivot low in the instrument, and the secondnamed lever member having its pivot high in the instrument.

17, The combination with a body having a handhold, of a slide on and guided by the body, a surgical device attached to the slide, an'upstanding lever pivotally mounted at its lower end and engaging the slide at its upper end, a second lever located between the first-named lever and the handheld and in operative relation to the letter, said sec- 0nd-nan1ed lever being pivotally mounted at its upper end to the body, and connected to the first-named lever by a curved slot engaged by a; pin provided on said elements above the pivot of the first-named lever,

whereby the two levers operate as a compound lever to draw the slide and snare in a direct line toward the operator.

In testimony that I claim the foregoing as my own, I have hereto affixed my signature.

EMORY CLAPP DAY. Witnesses:

ROY N. PEAoooK, FRED R. CLAPP. 

